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October Weather in Sydney, Canada

Last updated: June 18, 2025

In Sydney, Canada, the average temperature in October hovers around 10°C (51°F), with lows dipping to 1°C (35°F) and highs reaching 21°C (71°F). Expect about 108 mm (4.2 in) of precipitation spread over 11 days, contributing to an average humidity of 82%. Prepare for a mix of cool weather and occasional rain!

October Temperature in Sydney

In October in Sydney, the average temperature is 10°C (51°F). Maximums can reach 21°C (71°F), while minimums can drop as low as 1°C (35°F). This makes it a pleasant time for travelers, ideal for exploring the outdoors while enjoying comfortable weather.

October Weather in Sydney: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Sydney, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sydney, October typically has an average temperature of 10°C (51°F), with highs reaching up to 21°C (71°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec272528374455646860514133
Data source: Temperature data for Sydney generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Sydney

In Sydney in October, the precipitation amount is 108 mm (4.2 in), distributed over 11 days.

October Precipitation Trends in Sydney

The chart displays monthly precipitation patterns in Sydney, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Sydney, October typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec113131118140109102936893108182134
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Sydney

In Sydney in October humidity is 82%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that clings to your skin, making outdoor adventures less appealing and prompting travelers to seek cozy indoor activities or warm drinks to counter the brisk air.

October Average Humidity in Sydney

This chart illustrates the average monthly humidity levels in Sydney, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Sydney is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%87%87%88%89%91%90%86%82%83%83%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Sydney

In Sydney in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Sydney.

Maximum UV Index Levels in Sydney for October

The chart shows the monthly maximum UV Index (UVI) for Sydney in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Sydney typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357910887532
Data source: Sydney October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in Sydney Compares to Other Months

Weather in Sydney varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Sydney, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sydney, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)113 mm (4.5 inches)86%low
February Weather-4°C (25°F)131 mm (5.2 inches)87%moderate
March Weather-2°C (29°F)118 mm (4.6 inches)87%moderate
April Weather3°C (37°F)140 mm (5.5 inches)87%high
May Weather7°C (45°F)109 mm (4.3 inches)88%very high
June Weather13°C (55°F)102 mm (4.0 inches)89%very high
July Weather18°C (64°F)93 mm (3.7 inches)91%very high
August Weather20°C (68°F)68 mm (2.7 inches)90%very high
September Weather16°C (60°F)93 mm (3.7 inches)86%high
October Weather10°C (51°F)108 mm (4.2 inches)82%moderate
November Weather5°C (42°F)182 mm (7.2 inches)83%moderate
December Weather0°C (33°F)134 mm (5.3 inches)83%low

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